Fix 'Serialization Error Action Needed' in Ready or Not: Quick Solutions

Ready or Not might sound like a kid's game, but it's far from child-friendly, offering intense SWAT-based FPS action in both single and multiplayer modes. However, you might encounter technical hiccups like the "Serialization Error Action Needed." Here's how to resolve this issue in Ready or Not.

How To Tackle 'Serialization Error Action Needed' in Ready or Not

Screenshot via The Escapist

The Ready or Not error "Serialization Error Action Needed" typically comes with the message "Corrupt data found, please verify your installation." This is an Unreal Engine error, and there are several ways to address it.

1. Verify Your Installation

First, do exactly what the error message suggests: verify your installation. Here's how:

• Ensure Steam is not set to offline mode.
• Go to your Steam Library, find Ready or Not, right-click on it, and select "Properties."
• Navigate to "Installed Files" and click on "Verify Integrity of Game Files."
• Steam will check for any missing or damaged files and re-download them if necessary.
• Launch Ready or Not again to see if the issue is resolved. If not, proceed to the next step.

2. Remove Any Mods

The "Serialization Error Action Needed" can often be triggered by outdated or broken mods, especially those not compatible with Unreal Engine 5. Here’s how to remove mods:

• In your Steam Library, find Ready or Not, left-click on "Manage," then "Browse Local Files."
• Navigate through the "ReadyorNot" folder, then "Content," and finally "Paks."
• Delete the "mod.io" folder.
• Try running the game again; if it works, you've successfully removed the problematic mods.

Related: Ready or Not: What’s Better, DirectX 11 or DirectX 12 (DX11 vs. DX12)?

3. Reinstall Your Mods

To get your mods back, reinstall them one at a time to pinpoint any issues:

• Visit Nexus Mods, Mod.io, or your preferred mod source, and check the update dates on each mod's page.
• Only install mods updated after July 2024, when Ready or Not transitioned to Unreal Engine 5.
• Install a mod, launch the game, and check for errors. If an error occurs, the last mod installed is likely the culprit and should be skipped.

If all else fails, consider a complete uninstall and reinstall of Ready or Not. Although rare, hard disk corruption could also be a factor, but most cases of this error are linked to outdated mods.

And that's how you can fix the "Serialization Error Action Needed" in Ready or Not.

Ready or Not is available now for PC.